Voltage supply circuit, memory cell arrangement, and method for operating a memory cell arrangement
AssigneeFerroelectric Memory GmbH
InventorMarko Noack
Life of this patent
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Abstract
In various aspects, a voltage supply circuit may include a first controlled voltage converter circuit including a first voltage converter and a first control circuit, wherein the first control circuit is configured to receive an input voltage and control the first voltage converter to output a first output voltage having a predefined relationship to the received input voltage; and a second controlled voltage converter circuit including a second voltage converter and a second control circuit, wherein the second control circuit is configured to receive the first output voltage and control the second voltage converter to output a second output voltage having a predefined relationship to the received first output voltage.
Claims11
A memory cell arrangement, comprising:
- a first set of memory cell drivers configured to selectively supply a supply voltage of a set of supply voltages to one or more first control-lines for operating one or more memory cells;
- a second set of memory cell drivers configured to selectively supply another supply voltage of the set of supply voltages to one or more second control-lines for operating the one or more memory cells;
- and
- a voltage supply circuit configured to generate the set of supply voltages, the voltage supply circuit comprising:
- a first controlled voltage converter circuit comprising a first voltage converter and a first control circuit, wherein the first control circuit is configured to receive an input voltage and control the first voltage converter to generate a first supply voltage of the set of supply voltages in response to the received input voltage;
- a second controlled voltage converter circuit comprising a second voltage converter and a second control circuit, wherein the second control circuit is configured to receive the first supply voltage and control the second voltage converter to generate a second supply voltage of the set of supply voltages in response to the received first supply voltage;
- and
- a third controlled voltage converter circuit comprising a third voltage converter and a third control circuit, wherein the third control circuit is configured to receive the first or the second supply voltage and control the third voltage converter to output a third supply voltage of the set of supply voltages in response to the received first or second supply voltage;
- and
- a supply circuit configured to provide a fourth supply voltage of the set of supply voltages.
A voltage supply circuit, comprising:
- an input node to receive an input voltage;
- a first output node to output a first output voltage;
- a second output node to output a second output voltage;
- a first controlled voltage converter circuit comprising a first voltage converter and a first control circuit, wherein the first control circuit is configured to control the first voltage converter to generate the first output voltage in response to the received input voltage;
- and
- a second controlled voltage converter circuit comprising a second voltage converter and a second control circuit, wherein the second control circuit is configured to control the second voltage converter to output the second output voltage in response to the generated first output voltage,
- wherein the first control circuit is configured as a closed-loop control circuit having a first voltage divider to generate a first feedback voltage from the first output voltage and a first comparator to compare the first feedback voltage with the input voltage, wherein the first control circuit is configured to control the first voltage converter to output the first output voltage in response to a first control voltage generated by the first comparator;
- and
- wherein the second control circuit is configured as a closed-loop control circuit having a second voltage divider to generate a second feedback voltage from the second output voltage and a second comparator to compare the second feedback voltage with the first output voltage, wherein the second control circuit is configured to control the second voltage converter to output the second output voltage in response to a second control voltage generated by the second comparator.
Dependencies are inferred from the claim text.